﻿using System;
using System.Runtime.InteropServices;

namespace FutureTech.Hardware.Camera.Hikvision
{

        public class HKPlaySDK
        {

                public const string PLAYM4_API = "extern \"C\"__declspec(dllexport)";

                // public const string PLAYM4_API = "extern \"C\" __declspec(dllimport)";


                //Max channel numbers
                public const int PLAYM4_MAX_SUPPORTS = 500;
                //Wave coef range;
                public const int MIN_WAVE_COEF = -100;
                public const int MAX_WAVE_COEF = 100;

                //Timer type
                public const int TIMER_1 = 1; //Only 16 timers for every process.Default TIMER;
                public const int TIMER_2 = 2;//Not limit;But the precision less than TIMER_1; 

                //BUFFER TYPE
                public const int BUF_VIDEO_SRC = 1;
                public const int BUF_AUDIO_SRC = 2;
                public const int BUF_VIDEO_RENDER = 3;
                public const int BUF_AUDIO_RENDER = 4;

                //Error code
                public const int PLAYM4_NOERROR = 0;//no error
                public const int PLAYM4_PARA_OVER = 1;//input parameter is invalid;
                public const int PLAYM4_ORDER_ERROR = 2;//The order of the function to be called is error.
                public const int PLAYM4_TIMER_ERROR = 3;//Create multimedia clock failed;
                public const int PLAYM4_DEC_VIDEO_ERROR = 4;//Decode video data failed.
                public const int PLAYM4_DEC_AUDIO_ERROR = 5;//Decode audio data failed.
                public const int PLAYM4_ALLOC_MEMORY_ERROR = 6;//Allocate memory failed.
                public const int PLAYM4_OPEN_FILE_ERROR = 7;//Open the file failed.
                public const int PLAYM4_CREATE_OBJ_ERROR = 8;//Create thread or event failed
                public const int PLAYM4_CREATE_DDRAW_ERROR = 9;//Create DirectDraw object failed.
                public const int PLAYM4_CREATE_OFFSCREEN_ERROR = 10;//failed when creating off-screen surface.
                public const int PLAYM4_BUF_OVER = 11;//buffer is overflow
                public const int PLAYM4_CREATE_SOUND_ERROR = 12;//failed when creating audio device.	
                public const int PLAYM4_SET_VOLUME_ERROR = 13;//Set volume failed
                public const int PLAYM4_SUPPORT_FILE_ONLY = 14;//The function only support play file.
                public const int PLAYM4_SUPPORT_STREAM_ONLY = 15;//The function only support play stream.
                public const int PLAYM4_SYS_NOT_SUPPORT = 16;//System not support.
                public const int PLAYM4_FILEHEADER_UNKNOWN = 17;//No file header.
                public const int PLAYM4_VERSION_INCORRECT = 18;//The version of decoder and encoder is not adapted.  
                public const int PLAYM4_INIT_DECODER_ERROR = 19;//Initialize decoder failed.
                public const int PLAYM4_CHECK_FILE_ERROR = 20;//The file data is unknown.
                public const int PLAYM4_INIT_TIMER_ERROR = 21;//Initialize multimedia clock failed.
                public const int PLAYM4_BLT_ERROR = 22;//Blt failed.
                public const int PLAYM4_UPDATE_ERROR = 23;//Update failed.
                public const int PLAYM4_OPEN_FILE_ERROR_MULTI = 24;//openfile error, streamtype is multi
                public const int PLAYM4_OPEN_FILE_ERROR_VIDEO = 25;//openfile error, streamtype is video
                public const int PLAYM4_JPEG_COMPRESS_ERROR = 26;//JPEG compress error
                public const int PLAYM4_EXTRACT_NOT_SUPPORT = 27;//Don't support the version of this file.
                public const int PLAYM4_EXTRACT_DATA_ERROR = 28;//extract video data failed.
                public const int PLAYM4_SECRET_KEY_ERROR = 29;//Secret key is error //add 20071218

                //Max display regions.
                public const int MAX_DISPLAY_WND = 4;

                //Display type
                public const int DISPLAY_NORMAL = 1;
                public const int DISPLAY_QUARTER = 2;

                //Display buffers
                public const int MAX_DIS_FRAMES = 50;
                public const int MIN_DIS_FRAMES = 1;

                //Locate by
                public const int BY_FRAMENUM = 1;
                public const int BY_FRAMETIME = 2;

                //Source buffer
                public const int SOURCE_BUF_MAX = 1024 * 100000;
                public const int SOURCE_BUF_MIN = 1024 * 50;

                //Stream type
                public const int STREAME_REALTIME = 0;
                public const int STREAME_FILE = 1;

                //frame type
                public const int T_AUDIO16 = 101;
                public const int T_AUDIO8 = 100;
                public const int T_UYVY = 1;
                public const int T_YV12 = 3;
                public const int T_RGB32 = 7;

                //capability
                public const int SUPPORT_DDRAW = 1;
                public const int SUPPORT_BLT = 2;
                public const int SUPPORT_BLTFOURCC = 4;
                public const int SUPPORT_BLTSHRINKX = 8;
                public const int SUPPORT_BLTSHRINKY = 16;
                public const int SUPPORT_BLTSTRETCHX = 32;
                public const int SUPPORT_BLTSTRETCHY = 64;
                public const int SUPPORT_SSE = 128;
                public const int SUPPORT_MMX = 256;

                // 以下宏定义用于HIK_MEDIAINFO结构
                public const int FOURCC_HKMI = 0x484B4D49;	// "HKMI" HIK_MEDIAINFO结构标记
                // 系统封装格式
                public const int SYSTEM_NULL = 0;// 没有系统层，纯音频流或视频流	
                public const int SYSTEM_HIK = 1;// 海康文件层
                public const int SYSTEM_MPEG2_PS = 2;// PS封装
                public const int SYSTEM_MPEG2_TS = 3;// TS封装
                public const int SYSTEM_RTP = 4;// rtp封装

                // 视频编码类型
                public const int VIDEO_NULL = 0;// 没有视频
                public const int VIDEO_H264 = 1;// 标准H.264和海康H.264都可以用这个定义
                public const int VIDEO_MPEG4 = 3;// 标准MPEG4

                // 音频编码类型
                public const int AUDIO_NULL = 0;// 没有音频
                public const int AUDIO_ADPCM = 4096;// ADPCM 
                public const int AUDIO_MPEG = 8192;// MPEG 系列音频，解码器能自适应各种MPEG音频

                // G系列音频
                public const int AUDIO_G711_U = 28944;
                public const int AUDIO_G711_A = 28945;
                public const int AUDIO_G722_1 = 29217;
                public const int AUDIO_G723_1 = 29233;
                public const int AUDIO_G726 = 29280;
                public const int AUDIO_G729 = 29328;

                //Frame position
                public struct SYSTEMTIME
                {
                        public ushort wYear;
                        public ushort wMonth;
                        public ushort wDayOfWeek;
                        public ushort wDay;
                        public ushort wHour;
                        public ushort wMinute;
                        public ushort wSecond;
                        public ushort wMilliseconds;

                        public void Init()
                        {
                                wYear = 0;
                                wMonth = 0;
                                wDayOfWeek = 0;
                                wDay = 0;
                                wHour = 0;
                                wMinute = 0;
                                wSecond = 0;
                                wMilliseconds = 0;
                        }
                }

                public struct FRAME_POS
                {
                        public int nFilePos;
                        public int nFrameNum;
                        public int nFrameTime;
                        public int nErrorFrameNum;
                        public IntPtr pErrorTime;
                        public int nErrorLostFrameNum;
                        public int nErrorFrameSize;

                        public void Init()
                        {
                                nFilePos = 0;
                                nFrameNum = 0;
                                nFrameTime = 0;
                                nErrorFrameNum = 0;
                                pErrorTime = new IntPtr();
                                nErrorLostFrameNum = 0;
                                nErrorFrameSize = 0;
                        }
                }

                //Frame Info
                public struct FRAME_INFO
                {
                        public int nWidth;
                        public int nHeight;
                        public int nStamp;
                        public int nType;
                        public int nFrameRate;
                        public uint dwFrameNum;

                        public void Init()
                        {
                                nWidth = 0;
                                nHeight = 0;
                                nStamp = 0;
                                nType = 0;
                                nFrameRate = 0;
                                dwFrameNum = 0;
                        }
                }

                //Frame
                public struct FRAME_TYPE
                {
                        [MarshalAs(UnmanagedType.LPStr)]
                        public string pDataBuf;
                        public int nSize;
                        public int nFrameNum;
                        public bool bIsAudio;
                        public int nReserved;

                        public void Init()
                        {
                                pDataBuf = "";
                                nSize = 0;
                                nFrameNum = 0;
                                bIsAudio = false;
                                nReserved = 0;
                        }
                }

                //Watermark Info	//add by gb 080119
                public struct WATERMARK_INFO
                {
                        [MarshalAs(UnmanagedType.LPStr)]
                        public string pDataBuf;
                        public int nSize;
                        public int nFrameNum;
                        public bool bRsaRight;
                        public int nReserved;

                        public void Init()
                        {
                                pDataBuf = "";
                                nSize = 0;
                                nFrameNum = 0;
                                bRsaRight = false;
                                nReserved = 0;
                        }
                }

                // modified by gb 080425
                public struct HIK_MEDIAINFO
                {
                        public uint media_fourcc;// "HKMI": 0x484B4D49 Hikvision Media Information
                        public ushort media_version;// 版本号：指本信息结构版本号，目前为0x0101,即1.01版本，01：主版本号；01：子版本号。
                        public ushort device_id;// 设备ID，便于跟踪/分析	

                        public ushort system_format;// 系统封装层
                        public ushort video_format;// 视频编码类型

                        public ushort audio_format;// 音频编码类型
                        public byte audio_channels;// 通道数  
                        public byte audio_bits_per_sample;// 样位率
                        public uint audio_samplesrate;// 采样率 
                        public uint audio_bitrate;// 压缩音频码率,单位：bit
                        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4, ArraySubType = UnmanagedType.U4)]
                        public uint[] reserved;// 保留

                        public void Init()
                        {
                                media_fourcc = 0;
                                media_version = 0;
                                device_id = 0;
                                system_format = 0;
                                video_format = 0;
                                audio_format = 0;
                                audio_channels = 0;
                                audio_bits_per_sample = 0;
                                audio_samplesrate = 0;
                                audio_bitrate = 0;
                                reserved = new uint[4];
                        }
                }

                //自己定义的函数接口
                /*************************************************
                Function:	 ConverUiTimeToDateTime
                Description: 把用uint表示的时间转换成DateTime表示的时间
                Input:		 void
                Output:      void
                Return:		 void
                *************************************************/
                public static DateTime ConverUiTimeToDateTime(uint uiTime)
                {
                        int iYear = (int)((uiTime >> 26) + 2000);
                        int iMonth = (int)((uiTime >> 22) & 15);
                        int iDay = (int)((uiTime >> 17) & 31);
                        int iHour = (int)((uiTime >> 12) & 31);
                        int iMinute = (int)((uiTime >> 6) & 63);
                        int iSecond = (int)((uiTime >> 0) & 63);
                        DateTime dateTime = new DateTime(iYear, iMonth, iDay, iHour, iMinute, iSecond);
                        return dateTime;
                }

                /*************************************************
                Function:	 GetTimeFromUiTime
                Description:  从uint表示的时间获取时间
                Input:		  void
                Output:       void
                Return:		  void
                *************************************************/
                public static void GetTimeFromUiTime(uint uiTime, ref uint uiHour, ref uint uiMinute, ref uint uiSecond)
                {
                        uiHour = ((uiTime >> 12) & 31);
                        uiMinute = ((uiTime >> 6) & 63);
                        uiSecond = ((uiTime >> 0) & 63);
                }

                //API
                //Initialize DirecDraw.Now invalid.
                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_InitDDraw(IntPtr hWnd);
                //Release directDraw; Now invalid.
                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_RealeseDDraw();

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_OpenFile(int nPort, String sFileName);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_CloseFile(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_Play(int nPort, IntPtr hWnd);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_Stop(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_Pause(int nPort, uint nPause);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_Fast(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_Slow(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_OneByOne(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetPlayPos(int nPort, float fRelativePos);

                [DllImport("PlayCtrl.dll")]
                public static extern float PlayM4_GetPlayPos(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetFileEndMsg(int nPort, IntPtr hWnd, uint nMsg);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetVolume(int nPort, ushort nVolume);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_StopSound();

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_PlaySound(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_OpenStream(int nPort, ref byte pFileHeadBuf, uint nSize, uint nBufPoolSize);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_InputData(int nPort, ref byte pBuf, uint nSize);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_CloseStream(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern int PlayM4_GetCaps();

                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetFileTime(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_GetFileTimeEx(int nPort, ref uint pStart, ref uint pStop, ref uint pRev);


                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetPlayedTime(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetPlayedFrames(int nPort);

                ////////////////ver 2.0 added///////////////////////////////////////
                public delegate void DECCBFUN(int nPort, IntPtr pBuf, int nSize, ref FRAME_INFO pFrameInfo, int nReserved1, int nReserved2);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetDecCallBack(int nPort, DECCBFUN DecCBFun);


                public delegate void DISPLAYCBFUN(int nPort, IntPtr pBuf, int nSize, int nWidth, int nHeight, int nStamp, int nType, int nReserved);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetDisplayCallBack(int nPort, DISPLAYCBFUN DisplayCBFun);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PLayM4_ConvertToBmpFile(IntPtr pBuf, int nSize, int nWidth, int nHeight, int nType, string sFileName);

                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetFileTotalFrames(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetCurrentFrameRate(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetPlayedTimeEx(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetPlayedTimeEx(int nPort, uint nTime);

                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetCurrentFrameNum(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetStreamOpenMode(int nPort, uint nMode);

                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetFileHeadLength();

                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetSdkVersion();

                ////////////////ver 2.2 added///////////////////////////////////////
                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetLastError(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_RefreshPlay(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetOverlayMode(int nPort, int bOverlay, uint colorKey);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_GetPictureSize(int nPort, ref int pWidth, ref int pHeight);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetPicQuality(int nPort, int bHighQuality);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_PlaySoundShare(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_StopSoundShare(int nPort);

                ////////////////ver 2.4 added///////////////////////////////////////
                [DllImport("PlayCtrl.dll")]
                public static extern int PlayM4_GetStreamOpenMode(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern int PlayM4_GetOverlayMode(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetColorKey(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern ushort PlayM4_GetVolume(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_GetPictureQuality(int nPort, ref int bHighQuality);

                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetSourceBufferRemain(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_ResetSourceBuffer(int nPort);

                public delegate void SOURCEBUFCALLBACKI(int nPort, uint nBufSize, uint dwUser, IntPtr pResvered);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetSourceBufCallBack(int nPort, uint nThreShold, SOURCEBUFCALLBACKI SourceBufCallBack, uint dwUser, IntPtr pReserved);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_ResetSourceBufFlag(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetDisplayBuf(int nPort, uint nNum);

                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetDisplayBuf(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_OneByOneBack(int nPort);

                // PLAYM4_API BOOL __stdcall PlayM4_SetFileRefCallBack(LONG nPort, void (__stdcall *pFileRefDone)(DWORD nPort,DWORD nUser),DWORD nUser);
                public delegate void PFILEREFDONE(uint nPort, uint nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetFileRefCallBack(int nPort, PFILEREFDONE pFileRefDone, uint nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_GetKeyFramePos(int nPort, uint nValue, uint nType, ref FRAME_POS pFramePos);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_GetNextKeyFramePos(int nPort, uint nValue, uint nType, ref FRAME_POS pFramePos);


                //#if (WINVER >= 0x0400)
                //Note: These funtion must be builded under win2000 or above with Microsoft Platform sdk.
                //	    You can download the sdk from "http://www.microsoft.com/msdownload/platformsdk/sdkupdate/";
                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_InitDDrawDevice();

                [DllImport("PlayCtrl.dll")]
                public static extern void PlayM4_ReleaseDDrawDevice();

                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetDDrawDeviceTotalNums();

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetDDrawDevice(int nPort, uint nDeviceNum);

                [DllImport("PlayCtrl.dll")]
                public static extern int PlayM4_GetCapsEx(uint nDDrawDeviceNum);

                //#endif
                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_ThrowBFrameNum(int nPort, uint nNum);

                ////////////////ver 2.5 added///////////////////////////////////////
                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetDisplayType(int nPort, int nType);

                [DllImport("PlayCtrl.dll")]
                public static extern int PlayM4_GetDisplayType(int nPort);

                ////////////////ver 3.0 added///////////////////////////////////////
                public struct tagRECT
                {
                        public int left;
                        public int top;
                        public int right;
                        public int bottom;

                        public void Init()
                        {
                                left = 0;
                                top = 0;
                                right = 0;
                                bottom = 0;
                        }
                }

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetDecCBStream(int nPort, uint nStream);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetDisplayRegion(int nPort, uint nRegionNum, ref tagRECT pSrcRect, System.IntPtr hDestWnd, [MarshalAs(System.Runtime.InteropServices.UnmanagedType.Bool)] bool bEnable);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_RefreshPlayEx(int nPort, uint nRegionNum);

                //#if (WINVER >= 0x0400)
                //Note: The funtion must be builded under win2000 or above with Microsoft Platform sdk.
                //	    You can download the sdk from http://www.microsoft.com/msdownload/platformsdk/sdkupdate/;
                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetDDrawDeviceEx(int nPort, uint nRegionNum, uint nDeviceNum);

                //#endif
                /////////////////v3.2 added/////////////////////////////////////////
                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_GetRefValue(int nPort, ref byte pBuffer, ref uint pSize);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetRefValue(int nPort, ref byte pBuffer, uint nSize);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_OpenStreamEx(int nPort, ref byte pFileHeadBuf, uint nSize, uint nBufPoolSize);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_CloseStreamEx(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_InputVideoData(int nPort, ref byte pBuf, uint nSize);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_InputAudioData(int nPort, ref byte pBuf, uint nSize);


                public delegate void DRAWFUN(int nPort, System.IntPtr hDc, int nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_RigisterDrawFun(int nPort, DRAWFUN DrawFun, int nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_RegisterDrawFun(int nPort, DRAWFUN DrawFun, int nUser);

                //////////////////v3.4/////////////////////////////////////////////////////
                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetTimerType(int nPort, uint nTimerType, uint nReserved);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_GetTimerType(int nPort, ref uint pTimerType, ref uint pReserved);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_ResetBuffer(int nPort, uint nBufType);

                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetBufferValue(int nPort, uint nBufType);

                //////////////////V3.6/////////////////////////////////////////////////////////
                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_AdjustWaveAudio(int nPort, int nCoefficient);

                public delegate void FUNVERYFY(int nPort, ref FRAME_POS pFilePos, uint bIsVideo, uint nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetVerifyCallBack(int nPort, uint nBeginTime, uint nEndTime, FUNVERYFY funVerify, uint nUser);

                public delegate void FUNAUDIO(int nPort, string pAudioBuf, int nSize, int nStamp, int nType, int nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetAudioCallBack(int nPort, FUNAUDIO funAudio, int nUser);


                public delegate void FUNENCCHANGE(int nPort, int nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetEncTypeChangeCallBack(int nPort, FUNENCCHANGE funEncChange, int nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetColor(int nPort, uint nRegionNum, int nBrightness, int nContrast, int nSaturation, int nHue);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_GetColor(int nPort, uint nRegionNum, ref int pBrightness, ref int pContrast, ref int pSaturation, ref int pHue);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetEncChangeMsg(int nPort, System.IntPtr hWnd, uint nMsg);

                public delegate void FUNGETORIGNALFRAME(int nPort, ref FRAME_TYPE frameType, int nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_GetOriginalFrameCallBack(int nPort, int bIsChange, int bNormalSpeed, int nStartFrameNum, int nStartStamp, int nFileHeader, FUNGETORIGNALFRAME funGetOrignalFrame, int nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_GetFileSpecialAttr(int nPort, ref uint pTimeStamp, ref uint pFileNum, ref uint pReserved);

                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetSpecialData(int nPort);

                public delegate void FUNCHECKWATERMARK(int nPort, ref WATERMARK_INFO pWatermarkInfo, uint nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetCheckWatermarkCallBack(int nPort, FUNCHECKWATERMARK funCheckWatermark, uint nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetImageSharpen(int nPort, uint nLevel);

                public delegate void FUNTHROWBFRAME(int nPort, uint nBFrame, uint nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_GetThrowBFrameCallBack(int nPort, FUNTHROWBFRAME funThrowBFrame, uint nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetDecodeFrameType(int nPort, uint nFrameType);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetPlayMode(int nPort, int bNormal);

                public delegate void FUNGETUSERDATA(int nPort, ref byte pUserBuf, uint nBufLen, uint nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetGetUserDataCallBack(int nPort, FUNGETUSERDATA funGetUserData, uint nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetOverlayFlipMode(int nPort, int bTrue);

                [DllImport("PlayCtrl.dll")]
                public static extern uint PlayM4_GetAbsFrameNum(int nPort);

                //////////////////V4.7.0.0//////////////////////////////////////////////////////
                ////convert yuv to jpeg
                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_ConvertToJpegFile(IntPtr pBuf, int nSize, int nWidth, int nHeight, int nType, string sFileName);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetJpegQuality(int nQuality);

                //set deflash
                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetDeflash(int nPort, int bDefalsh);

                //////////////////V4.8.0.0/////////////////////////////////////////////////////////
                //check discontinuous frame number as error data?
                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_CheckDiscontinuousFrameNum(int nPort, int bCheck);

                //get bmp or jpeg
                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_GetBMP(int nPort, ref byte pBitmap, uint nBufSize, ref uint pBmpSize);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_GetBMP(int nPort, IntPtr pBitmap, uint nBufSize, ref uint pBmpSize);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_GetJPEG(int nPort, IntPtr pJpeg, uint nBufSize, ref uint pJpegSize);

                //dec call back mend
                //public delegate void DECCBFUN(int nPort, string pBuf, int nSize, ref FRAME_INFO pFrameInfo, int nUser, int nReserved2);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetDecCallBackMend(int nPort, DECCBFUN DecCBFun, int nUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetSecretKey(int nPort, int lKeyType, string pSecretKey, int lKeyLen);

                // add by gb 2007-12-23
                public delegate void FILEENDCALLBACK(int nPort, System.IntPtr pUser);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetFileEndCallback(int nPort, FILEENDCALLBACK FileEndCallback, IntPtr pUser);

                // add by gb 080131 version 4.9.0.1
                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_GetPort(ref int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_FreePort(int nPort);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SyncToAudio(int nPort, int bSyncToAudio);

                //public delegate void Anonymous_b532dad6_7470_4b10_9638_c82a363cd853(int nPort, System.IntPtr pBuf, int nSize, ref FRAME_INFO pFrameInfo, int nReserved1, int nReserved2);

                [DllImport("PlayCtrl.dll")]
                public static extern bool PlayM4_SetDecCallBackEx(int nPort, DECCBFUN DecCBFun, IntPtr pDest, int nDestSize);
        }


}

